Flashcards

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Kamael Alhujaimi Inglês 13 flashcards

Flashcards do conjunto (13)

1What does neutron mean?A particle with no electric charge it is found in the nucleus of an atom.
2What does atom mean?the fundamental building blocks of all material it consists of a cluster of proton and neutrons surrounded by a cloud of electrons.
3What does element mean?A substance made up of only one type of atom.
4What does compound mean?A pure substance that is made up of two or more atoms.
5Which ones are molecules or crystal lattice; oxygen copper diamond phosphorusA)molecule
B)crystal lattice
C)crystal lattice
D)molecule
6Name the force that; attracts electrons to the nucleus makes protons repel each other holds protons together in the necleusA)electrostatic attractions
B) electrostatics
C) nuclear force
7Explain why an atom is charged neutral?The number of electrons equals the number of protons making a neutral charge.
8What does atomic number mean?The number of protons in a nucleus.
9What does crystal lattice mean.A grid like of atoms and ions in which each particale is bonded to all of its neighboring atoms.
10What does ion mean?An atom that has gained or lost an atom.
11How do you find the neutron?Mass number -atomic number
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